Coarse threaded, multi-spindles are widely used for the automatic unscrewing the thread-forming workpiece. The spindle 2 is generally arranged in the centre line of the mold as hown in Fig. 6.57. T...

In Fig. 6.50, the sub-parting line I is for takeing the residual material, and the main partir line II is for takeing workpiece. The side hook 2 can be lifted out with a control hook 4 fixed to the...

A hole in the workpiece, there is a core pin'in the mold correspondingly. Core pin Is commonly referred to as core pin shift. A general rule, holes design is that a wall located near a hole should be

Advantage: The mold is operated fully automatically. The ejection is completely safe.The workpieces fall into the box by their own weight. Disadvantage: preparation of the tapered ejector pins a...

There are holes or opening in plastic workpieces which used for a variety of purpose, such as assembly with other parts, decorate the workpiece or give it more eye appeal, or as ventilators and so om.

The internal hole of the workpiece is formed by hole-shaping mandrel 4 fixed to the stationary fixing plate 2. This mandrel is fairly long and when the mold is opened, the sudden cooling workpiece ...

One of the most common errors is sharp corners in plastics workpiece design. Designing with sharp comers may failure in final use because the sharp corners are areas of high stress concentration and d

​The stationary eiectoro plate can be actuated with side hooks as shown in Fig. 6. 45, and the side hook 17 can be lifted out with the nose of a control hook 15 fixed to the stationary clamping pla...

The location of ribs and gussets can affect the mold design and the flow length of plastic material in injection process, Gate location can work in concert with the position of ribs and gussets to i